Ricardo Pena-Barriga, 37, was shot and killed on July 5, 2009, in Oakland, California. His death was one of many that year during a spike in violence that left Oakland with 104 homicides in 2009, a year officials and residents linked to gang activity, street conflicts, and a high number of shootings.

The case is presented as part of a cycle of senseless street confrontations that strained families and neighborhoods and prompted calls for increased policing and community-based prevention.

Are there readers who remember Pena-Barriga or have information about the shooting on July 5, 2009?